TEDGlobal 2013 in Edinburgh, Scotland. June 12-15, 2013. Photo: James Duncan Davidson

TED presents Grégoire Courtine who fresh from his lab, shows a new method — combining drugs, electrical stimulation and a robot — that could re-awaken the neural pathways and help the body learn again to move on its own. See how it works, as a paralyzed rat becomes able to run and navigate stairs.